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$300+ Cheap flights from Shannon (SNN) to San Francisco (SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SFO
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
1 adult, Economy
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Cheap flight deals from Shannon to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Shannon (SNN) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$656
(Gotogate)

One-way from

$300
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$612
Provider with most accurate pricing for Shannon-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Shannon-San Francisco flights.
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From Shannon to San Francisco
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One-way flight from Shannon to San Francisco
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($110 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Shannon to San Francisco

Cheapest flights from Shannon to San Francisco
Explore the most affordable flight options available from Shannon to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

This Gotogate deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/84:55 pmSNN - SFO
2 stops31h 00mAer Lingus
Mon 5/127:30 pmSFO - SNN
1 stop17h 05mAer Lingus
Deal found 3/25$656
This Lufthansa deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2412:30 pmSNN - SFO
1 stop17h 11mLufthansa
Tue 4/2910:35 pmSFO - SNN
2 stops27h 40mLufthansa
Deal found 3/25$683
This United Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2412:30 pmSNN - SFO
2 stops16h 38mUnited Airlines
Tue 4/298:00 amSFO - SNN
2 stops18h 15mUnited Airlines
Deal found 3/25$689
This British Airways deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/89:15 pmSNN - SFO
1 stop28h 00mBritish Airways
Mon 5/124:20 pmSFO - SNN
1 stop20h 15mBritish Airways
Deal found 3/25$844
This TravelUp deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/124:55 pmSNN - SFO
1 stop28h 55mMultiple Airlines
Thu 10/164:35 pmSFO - SNN
1 stop34h 45mMultiple Airlines
Deal found 3/25$948

Cheapflights Fare Finder

Customize your flight search to find flights from Shannon to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 26, 2025.
Use the filters below to find and compare flights from Shannon to San Francisco that are best for you.

Fly from

Shannon

Fly to

San Francisco

Route

Depart

Return

Price

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 5/8

4:55 pm-3:55 pm

2 stops31h 00m

San Francisco

Mon 5/12

7:30 pm-8:35 pm

1 stop17h 05m

$656

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 4/24

12:30 pm-9:41 pm

1 stop17h 11m

San Francisco

Tue 4/29

7:00 am-10:15 am

1 stop19h 15m

$683

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 4/24

12:30 pm-9:08 pm

2 stops16h 38m

San Francisco

Tue 4/29

8:00 am-10:15 am

2 stops18h 15m

$689

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 5/8

9:15 pm-5:15 pm

1 stop28h 00m

San Francisco

Mon 5/12

4:20 pm-8:35 pm

1 stop20h 15m

$844

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 5/8

7:10 am-9:25 pm

2 stops22h 15m

San Francisco

Mon 5/12

10:15 am-4:10 pm

3 stops21h 55m

$1,100

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 5/9

11:25 pm-9:25 pm

3 stops54h 00m

$300

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 5/9

9:15 pm-3:55 pm

2 stops26h 40m

$403

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sat 9/20

1:05 pm-1:25 am

1 stop20h 20m

$690

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sat 9/20

7:40 am-8:37 pm

2 stops20h 57m

$700

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 5/23

9:30 am-11:30 pm

3 stops22h 00m

$1,113

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Compare providers for flights from Shannon to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Shannon to San Francisco in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Shannon, Clare-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Shannon, Clare-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Shannon, Clare-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Shannon, Clare-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Shannon, Clare-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Shannon to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Shannon with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Shannon to San Francisco

What is the cheapest month to book a flight from Shannon, Clare to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Shannon, Clare to San Francisco (average of $276). Flying from Shannon, Clare to San Francisco in June is currently the most expensive (average of $398). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated March 26, 2025.
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,891 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,608 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Aer Lingus
7.0
Good
1,062 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Lufthansa
6.7
Okay
6,950 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.6
Okay
6,712 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Shannon to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Shannon, Clare to San Francisco round-trip?

    Currently priced at $656, Aer Lingus will fly you from Shannon, Clare to San Francisco and back. In addition to Aer Lingus, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and United Airlines - these airlines can fly you to your destination from $683 and $689, respectively. Users have found that Aer Lingus is 11% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Shannon, Clare to San Francisco one-way?

    One-way options have recently been found by users for as low as $403 on Aer Lingus. Other airlines that offer cheap prices include Delta from $690 and British Airways from $700 one-way.

  • Can I find deals for flights from Shannon to San Francisco that include hotel bookings?

    Yes. In addition to deals on Shannon to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Shannon to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Shannon to San Francisco.

  • Can I find deals for business class flights from Shannon to San Francisco?

    Yes. Cheapflights offers flight deals from Shannon to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Shannon, Clare to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Shannon, Clare to San Francisco (average of $276). Flying from Shannon, Clare to San Francisco in June is currently the most expensive (average of $398). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Shannon?

Book flights to Shannon if you plan to visit one of these locations
Roseville
Mountain View
Santa Cruz
Turlock
Fairfield
South San Francisco
Manteca
Sausalito
Richmond
Watsonville
Hollister
Milpitas
Antioch
Hayward
Vallejo
Newark
Alameda
Campbell
Daly City
Pacific Grove

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